Created Keypairs (markdown)

Keypairs.md

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+Each build of Laika (cnc, bot && shell) is tied to a 'central keypair.' This keypair is used by the cnc server to authenticate themselves with each bot. The keypair is defined as a macro in `lib/include/lconfig.h.in`.
+
+## Generating keypairs
+
+[After compiling the target](Compiling), an output binary called `genKey` will be produced. This is a simple wrapper for libsodium to generate [keypairs](https://doc.libsodium.org/key_exchange/).
+
+```sh
+$ ./bin/genKey
+```
+> Note: on windows, genKey will be located in `winbin`
+
+You should receive output that looks like:
+
+```
+[~] Generated keypair!
+[~] public key: 40d5534aca77d1f5ec2bbe79dd9d0f52a78148918f95814404cefe97c34c5c27
+[~] private key: 90305aa77023d1c1e03265c3b6af046eb58d6ec8ba650b0dffed01379feab8cc
+```
+
+## Passing keypairs back to Laika
+
+Now that you have your central keypair, delete the build and output directories.
+
+```sh
+$ rm -rf bin build
+```
+
+Now re-build Laika, but passing your keypair
+
+```sh
+$ cmake -B build -DLAIKA_PUBKEY="40d5534aca77d1f5ec2bbe79dd9d0f52a78148918f95814404cefe97c34c5c27" -DLAIKA_PRIVKEY="90305aa77023d1c1e03265c3b6af046eb58d6ec8ba650b0dffed01379feab8cc" && cmake --build build
+```